DRILL-X® self-drilling metal screws deliver superior performance with a faster drive time and stronger pull-out rating. Made of high-quality steel and are specially heat treated. Stainless steel for exterior applications where corrosion resistance is required. Drill point has been incorporated into the screw in the familiar twist drill design. These screws drill their own hole that forms its own threads into the mating material. Drill-X® Screws can be used in steel, plastics, composite materials, wood plus various laminates. No pre-drilling is required. Great for general household repairs, renovations, improvements, and DIY projects, the sharp threads of these screws draw materials together and ensure a secure hold. Pan head - non-countersinking rounded top with a flat bottom provides a decorative and finished look. The hex washer head - non-countersinking hexagonal- shape head are ideal for projects with large bearing surface.